package com.saxon.servlet;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

public class SessionDemo extends HttpServlet {
    @Override
    protected void doGet (HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding ("utf-8");
        resp.setCharacterEncoding ("utf-8");
        resp.setContentType ("text/html;charset=utf-8");
        HttpSession session = req.getSession ();
        session.setAttribute ("saxon","saxon");
        session.setAttribute ("oldman","saxon");

        if (session.isNew ()){
            resp.getWriter ().print ("新创建的session："+session.getAttribute ("saxon")+"的ID是"+session.getId ());

        }else {
            resp.getWriter ().print ("原来就有的"+session.getAttribute ("saxon")+"的ID是"+session.getId ());

        }
    }

    @Override
    protected void doPost (HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet (req, resp);
    }
}
